What has to be done for transferring live audio and video feed from iPad 2 to Apple TV via AirPlay?

I need to transfer live audio and video feed from camera on my iPad 2 to Apple TV through AirPlay. It is possible to open the ‘Camera’ app and enable the ‘AirPlay Mirroring’ feature. But, the device can’t stream audio to the Apple TV. What should I do to fix up this issue?